Power-driven tool



Feb.- 10. 1925.

J. JAMES POWER DRIVEN-TOOL Filed Oct. 27, 1923 2 Sheets-Sheet 1 w .r i. m II Feb. 10. 1925.

J. JAMES POWER DRIVEN TOOL Filed Oct. 27. 1925 2 Sheets-Sheet 2 ,1. 51 1%. Sis

I Patented Feb. 10, 1925.

\ UNITED STATES PATENT- OFFICE,

JOIILY JAMES, OF DEARBORN, MICHIGAN.

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Application filed October 27, 1928.1 Serial no. 671,115..

To all whom it. may concern:

Be it known that I, JoLLY JAMES, .a citizen of the United States, residing at Dearborn, in' the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Power-Driven Tools, of which the following is a specificauon.

This invention relates to a power driven tool that may be used with a drill press.

The object of the invention is to provide a tool that is connected up in direct driving relation with a drill press for the purpose of pierformmg an operation on a piece of W0 One example shown in the drawings is the utilizing of this tool as a sockettending to stop the rotative movement of the tool, the tool will be retracted and will overcome the yieldable means tending to force the samein engagement with the work.

Another object is to provide the tool with a holder, whereby socket wrenches of different sizes may be detaohably secured thereto is set in operation.

In the drawings: Fig. 1 is a side elevation of the tool. Fig. 2 is a vertical lo-n itudinal section there through taken on t line'3-3 of Fig. 2.1 v Fig. 4 is a transverse section taken on the line H of Fig. 2.

vFig. 5 is a view similar to Fig. 2, partly Fig. 3 is a transverse section taken on the I) carried by a drill press c.

and other tool headssuch as a screw driver with a-threaded v agonal the tool and held therein beforethe machine,

e line 22 of in section and showing. another form of tool secured in the holder.

Fig. 6 1s a section on the line 6 -6 of Fio 5- i ig. 7 is an elevational view showing the tools, usedin connection with a multiple drill press and showing the magnets for retaining the bolts in the sockets.

The tool comprises a driving shank a which is adapted to besecured in the chu ks The drill press may be a single or a multiple press. The

driving shank is provided with a longitudinal hole d in which the tapered shank e of the tool support is fitted. Tln body of said tool support is of a larger diameter \than the tapered shanks, the upperpart of said enlarged portion being screw threaded as at f, while the lower portion is provided with theinclined grooves g.v A sleeve h is slidably supported on this tool support and is provided with a pair of pins 2' which are adapted to engage in the grooves g, thereby retaining the sleeve on the tool support and providing a direct driving connection between the tool support and the sleeve. A nut j is screwed on the threaded portion of the tool support and a spring 70 is interposed between this nut and the sleeve tending to .force the sleeve downwardly and hold the pinsz' at the bottom of the inclined grooves g. -Obviously the compression in the spring is can be increased by screwing down the nut j. The lower end of the sleeve h is interiorly threaded as at m and a tool at is provided portion 'w adapted to en gage the interior threads ofthe sleeve for etachably securing the tool to the sleeve it. x

This tool as shown in Fig. 2 and 4 is provided with a recess a hexagonal in cross section, which is adapted to fit over the hexhead of the bolt 12. The bolt ;0 is adapted to be screwed into a cylinder block g to secure thereto the cylinder head 1". pin 8 is screwed into the tool support and positioned centrally thereof, said pin proected downwardly through the opening t in the tool head. The said opening t connects with the recess 0. The function of this pin will be more clearly understood when the operation of the tool is described.

At times it is desirable to use another tool head (Fig: 5). I have shown here a form of tool head n which has a. screw driver.

oint for the purpose of screwing screws into a piece of work. Obviousl any form of tool head may be used, depen ing upon the work that is to be done, said heads detachably secured to the sleeve 71..

In the operation of the device the bolt p may be started in the threads and the tool brou ht down over the head of the bolt the said It head fitting into the recess 0 of the tool head. The spring k is compressed to such an extent that the resistance of the bolt, as itis screwed into the tapped hole carried by the cylinder block, is not sufiicient to overcome the pressure exerted by the spring and the bolt will be screwed into the block as the driving shank a is rotatably driven. This forms afiexible dri ing connection between the driving shank a, and the sleeve k which carriesthe tool head 11. However, as the bolt is driven home it will stop the tool head n from rota-tin The pins 2' carried by the sleeve h'to wl dich the tool head is secured are engaged in the inclined grooves 9. As the tool head is stopped these pins will be caused to ride up .in the inclined grooves thereby carrying the sleeve h upwardly or retracting the same. The pin 8 however, issecured to the body on WlllOh the sleeve slides. .As'the sleeve and tool head are forced upwardly the said pin will strike the bolt head and knock' it out of the socket or recess 0. This will cause the tool head to be automatically disengaged from the work. The work may now be removed and since the resistance to the driving effort has been removed, the spring k will force the sleeve and tool head downwardly the pin 73 riding down the grooveuntil it 1s stopped at the bottom the tool head, the sleeve again rotatin with the drive shank- In Fig. 7 I have shown means whereby the bolt p may be first inserted into the tool head when it is desired to use the device in connection with a multiple drill press. Surrounding the tool I have provided the coil magnets u which may be energized at will. This will magnetize the tool, thereby causing the bolt to be held within the socket 0. The multiple drill may now set in operation and a plurality of bolts-may be screwed into a piece of work simultaneously. The current -throughsaid magnets need not be one of very high voltage but only suflicient to hold the bolts in the socket. When the bolts are screwed down, however, the resistance issuflicient-to overcome the magnetism and allow the tool to be forcibly disengaged from the bolt.

The bolts 10 may be screwed into the work 'at any desired deg depending upon the corrgpression in the spring If it is desi to screw the bolts down real tight the compression in the spring is may be increased so that the tool head will not disengage from the work until the resistance .means for forcing the tool head is suflicient to overcome the increased compressive force of the s rm k, which yleldabl holds the tool lea in engagement wit the bolt.

What I claim is:

1. In a device as specified, the combination of a driving shank, a tool head slidably supported thereon, means-for connecting the tool head and shank in direct driving relation, means for yieldaloly forcing the said tool head in engagement with the work, and means for retracting the tool head from engagement with the work when the tool head encounters a resistance to the drivmg movement.

2. In a device as specified, the combina from the work when it encounters a resist-' ance to the driving movement.

,3. In a device as s eci'fied, .the combination of a driving shah provided-with an inclined groove, a tool head slidablysupported thereon and ,provided with a pm adapted to be guided in said inclined groove to provide a driving connection between the shank and toolhead, and yieldabl means inter osed between the driving shan and the tool head for forcing the said tool head into en agement with a piece of work, the pin carried by the tool head adapted to ride up said groove to disengage the tool head from the work when the driving force meets a suflicient resistance to overcome the into engagement withthe work.

4. In a power-driven wrench, the combination of a driving shank, a tool head Slldably supported on said driving shank, and

provided with means for gripping a iece of work, means for connecting the tool ead in direct driving relation with the drivin shank, means for yieldably forcing the too head into en agement with a piece of work, and means orautomatically retracting the tool head to disengage the same from the work when it encounters a resistance to the driving movement.

5. In a ower-driven' wrench, the combination o a driving shank, a: tool head slidably supported on said driving shank and provided with a recess at one end adapted to the toolhead and driving shank in direct driving relation, means for yieldably forein the tool head in engagement wlth the be t head, and means forretracting the tool head from engagement with thebolt head when the drivm movement of the tool head encounters a resistance sufiicient to overcome grip abolt head, means for connectingthe means for forcing the same into engagement with the bolt head.

6. In a power-driven Wrench, the combination of a driving shank, a tool holder slidable on said driving shank, means for connecting the tool holder in direct drivin relation with the driving shank, a tool hea 'detachably secured to said tool holder and provided with means for gripping a piece of work, means for gieldably forcing a tool holder and tool hea into'engagement with the piece of work, and means for retracting the tool head and holder to' disen age the same from the work when the tool ead encounters a resistance to the driving movement.

7. In t a power-driven wrench, the combination of a driving shank, a tool head slid ably'supported thereon, means for connecting the tool head to the shank in direct driving relation, adjustablef means for yieldably forcin with t e work, and means for retracting the tool head from engagement with the work'when it encounters airesistance to the driving movement.

8. In a power-driven wrench, the combination ofa driving shank provided with inclined grooves, a tool head slidably supported thereon and provided with pins guided in said inclined grooves whereby the said tool head has a limited longitudinal and rotatable movement with respect to the driving shank, and means for yieldabl s forcing the tool head into engagement wit a pieceof work whereby when the tool head encounters a resistance suflicient to retard its rotative movement the pins will ride in said grooves to retract the tool head for the puriose o. disengaging the same from the wor nation of a driving shank, a tool holder slidably sup rted thereon, means for connecting the tool holder and drive shank in direct the said tool head in engagement driving1 heads each i 9. In a. power-driven wrench, the combi- P driving relation, a tool head detachably secured to a tool holder and provided with means for gripsinga piece of work, said .holder and tool head in engagement with a piece of work, and means for retracting the tool head and holder whereby the pin carried by the driving shank strikes the piece of work to release the same from the said gripping means carried by the tool head.-

10. In a power-drivenwrench, the combination of a driving shank, a tool head slidably sup orted on said driving shank and provide with 'means for gripping a Eiece of work, means for connecting the tool ead in direct driving relation with the driving shank, means for yieldably forcing the tool head into engagement with a piece of work, means for retracting the tool head when it encounters a resistance to the driving movement and means carried by the said shank for disengagin the work from t e tool head as the same 1s retracted.

11. 'In a power-driven wrench, the combination of a plurality of driving shanks, tool s idably supported on said drivin shanks and provided with recesses a apted to fit over bolt heads, means for conmeeting the tool heads and driving shanks In direct driving relation, ,means for yieldably forcing the tool head into engagement with a iece of work, magnets positioned about said tool head arranged to magnetize said tool head when an electric current is passed through the ma ets, and means for retracting the tool sad when it encounters a resistanceft/i1 the drivm'g llxnovenlielrlit (flozrghe urpose. o isen ging t e too ea In the said bolt head a y In testimony whereof I aflix my signature.

JOLLY JAMES. 

